Motor mounting



Nov. 1, 1927.

INVENTOR E MRoss MOTOR MOUNTING Filed May 5.`1se

BY W M TM ATTORNEYS,

Patented Nov. 1, 1927.

' UNITED fffJxFF EnwrmnA Mauss; or RACINE, WISCONSIN, ASSIGNQBTOHSAMILTON- .BEACH MFG. C0., or,

A CORPORATION oF WISCONSIN.

RACINE, WISCONSIN,

` MOTOR .MOUNTINC Appiication med May 5v,

This invention relates to improvements in motor mountings, particularly adapted for the'attachment of flat type electric motors to sewing machine heads to drive the hand wheels thereof.

It is one of the objects of the present invention to provide a motor mounting for sewing machine heads which will permit disengagement of the motor pulley wheel with the hand wheel by a slight manual rotation of the mounting.

A further object of the invention is to provide a motor mounting of the class described in which the motor pulley wheel is normally held in yielding engagement Ywith the machine hand wheel, and, when the mounting is moved to disengaging position it will be automatically returned to normal position. l c

A further object of the invention is to provide a motor mounting of the class de` scribed which is of very simple construction,

is inexpensive to manufacture, is strong and durable, and is well adapted for the purposes described.

With the above and other objects in view the invention consists of the improved motor mounting for sewing machine heads, and its parts and combinations as set forth in the claims and all equivalents thereof.

In the accompanying drawing in which the same reference characters indicate the same parts in all of the views:

F ig. 1 is an end view of a sewing machine head showing the improved motor mounting and motor carried thereby; A

Fig. 2 is a side view thereof; and

Fig. 3 is an enlarged detail sectional view.

Referring now more particularly to the drawing it will be seen that the numeral 5 indicates the head portion of a sewing machine from the end of which extends a shaft on which a hand wheel 6 of usual construction is mounted.

Said hand wheel is adapted to be frictionally engaged by the pulley wheel 7 of a small flat type electric motor 8 and the invention resides particularly in the means employed for yieldingly attaching the motor to the head in a position adjacent said hand wheel.

For this purpose a plate 9 is secured to from.

1926. Serial No. 106,981.

the back of the motor and said plate is yformed with a medial, projecting collar portionv 1() havinga bayonet slot 11 in the wall thereof. Screwed into the side of the head which is flattened as at 12, is a stud member 13 having an enlarged head from` which a pin 14 extends laterally. The head of the stud member extends into the collar portion 10 of the plate 9 and the pin 14el is engaged by the bayonet slot 11.

A spring member 15 is coiled externally about said collar portion and the lower end thereof is bent angularly and enters the head, as at 16. The upper' angular end portion of the spring extends in to the plate and motor, as at 17.

By reason of the arrangement described the motor is held to the side portion of the head and removal is prevented by the bayonet slot and pin engagement and the bayonet slot also serves to permit a limited rotary movement of the plate and motor with respect to the stud and head. When it is desired to disengage the motor pulley Wheel rom the machine hand wheel, the plate and motor are turned to the dotted line position in Fig. 2. This movement tends to wind the spring on the collar portion, and when'the motor is released the unwinding of the spring will return the motor to normal engaging position.

From the foregoing description it will be seen that the improved motor mounting `is of very simple and novel construction, and is well adapted for the purpose set forth.

What is claimed as the invention is:

1. A motor mounting, comprising a fixed support engaging member, a revoluble motor carrying member engaging the fixed In'ember, said fixed member and motor carrying member being formed with cooperating pin and bayonet slot means for holding said members in engagement and for limiting the revoluble movement of the motor carrying member, and means for automatically returning the motor carrying memberto normal position when'manually moved there- 2. The combination with a sewing machine head having a revoluble hand Wheel, of a motor mounting, comprising a headed stud extending into the side of the head, said stud 2v y.' Y 1,647,743

having a pin extending laterally from its pulley Wheel in yielding engagement With head portion, a plate member formed with a said hand Wheel, and a spring coiled about projecting collar portion revolubly engaging said collar portion and having its end por- 10 the head of said stud, there being a bayonet tions extended into the head and the plate slot in the Wall of said collar portion into member.

Which said pin extends, a motor carried by In testimony whereof, I aiix my signature.

said plate member and normally having its EDWARD MROSS. 

